Next up, to widen the data bottleneck, this needs to be electrically parallelized and combined with (nontrivial) nanomechanical demultiplexing.
All that while reducing self assembly failure rate and further extending and improving improving (the already demonstrated) convergent/hierarchical self assembly capabilities.

The emergence of unconventional biomineralization research is also a milestone I'm eagerly waiting for.
(Unconventional in the sense of not trying to recreate strong (but non AP) composite materials like mica but trying to create less strong but more versatile pure and AP single crystals of desired shape.)